10.3 years; speed of light = 299,792 km/s (Internet)
(97*10^12 km)/(299,792 km/s)=323,557,666.6 seconds
Convert seconds to years which should give you 10.3 years. Looks reasonable
Answer:
Option A, it is more rapid than the primary response and results in higher antibody levels.
Explanation:
When an antigen contacts the immunity system for the first time it leads to a primary immune response. Since it is the first interaction, it requires more time to produce effect.
While a secondary response occurs when the same antigen attacks the same person second , third or n number of times. During secondary response, the body already has a memory of primary immune response and thus it is faster.
Hence, option A is correct
I think the nurse should not allow the parents to do their crying and yelling or exclude them until the anxious child has calmed down as the child cannot deal with her/his pain as long she/he is stressed out by the parents behaviour.
New Zealand's population density = 4,326,380 people /103,736 mi^2 = 42 people/mi^2. Australia's population density = 21,905,140 people / 2,967,909 mi^2 = 7 people/mi^2.
